He is very good with Chieftain Tauren and he can also play separate team of units. Imagine a person with 4 eyes and 2 screens using successful tactic at the same time is such a high level skills and dexterity.

remember the gold old times...watching vods of grubby facing ToD or Moon...damn there was a epic game on TM (moon was like fucking undefeated for like 40 games or so) and Grubby won! Fuck those times were fucking 3lite!